Ignition breaker contact



J. A. STUMPENHORST.

IGNITION BREAKER CONTACT.

APPLICATION FILED JULYS. I919.

1,382,870. Patented June 28, 192 1.

wnmzssss; VENTOR 47 A/ John ,4. umpenfiorsf ATTORNEY L u-mrso ,STATESPATENT OFF-ICE.

- JOHN A. s'romnnnonsr, or WILKINSBURG, PENNSYLVANIA, AssIGn'oB. T WEST-To dlwkomitmayconcem:

. nisms and menousn nnncrnxc & moracronnvs conrm, A

BYLYANIA,

CORPORATION or 2m IGNITION BREAKER CONTACT.

I Specification of Letters Patent. Patent d J 28 1921 Application filedJuly 5, 1919. Serial No. 308,710.

Be it known that I, JOHN A. STUMPEN- HORST, a citizen of the UnitedStates, and a resident of Wilkinsburg, in ,the county of AlleghenyrandState of Pennsylvania, have invented a new and useful Improvement in toignition mechaparticularlyto circuit breakers therefor.

- Theobject'of my invention is to provide a simple and inexpensivedevice for so ad j usting the circuit-breaker contacts that theyshall'be parallel to'each other over their entire cotiperating surfaces.

My invention relates In assembling circuit breakers for ignitionapparatus, it essential that the cooperating contacts shall be inengagement over their entire surfaces, and, where no adjusting meansisprovided for the stationary contact arm,,it may be ne'cessar to'bend theresilient member or to' disassem Ie, the breaker-parts mg surfaces ofthe contacts. I

In practising my invention, I provide the stationary'contact arm withtwo cotiperating of the body of the clamping bolt. I

invention; Fig. 2 is a side elevation thereo In the single sheet ofdrawings, Figure 1 is a top plan view of the device embodying In 7 andFig. 3 is an enlarged -view, partly in section and .partly in sideelevation, of the particular device embodying my invention.

Referring to Fig. 1, a supporting plate 1.0

' of usual construction is provided with a circular opening 11' at itscenter in which is b placed a rotatable shaft 12. The shaft 12 is riven,in any approved manner, by a gas engine (not shown) with which theignition mechanism is to be used, and the plate 10' is mounted in anysuitable position and manner thereon. The shaft 12 has an extension 13,

at its upper end, which is provided with a egtal, in number, to thenumber ofcylinders plurality of cam faces 14 that are usually the gasenginewith which the device is to i be associated. The cam faces 14engage a resilient member 15 carrying a contact 16,

the member 15 being'suitably mounted on the supporting plate 10 andinsulated therefrom accordlng to standard practice in the art.

' The coiiperating contact 17 is mounted at one end of an arm 18, theother end of which has a circular opening 19 drilled therethrough. Twosemi-spherical members 20' are provided, each having a circular opening-21 drilled therethrough that is somewhat larger, in diameter, than thediameter of the body of a clamplng bolt or screw 22. Two

cooperating seat members 23 of circular contour each having oneflatface'and a semi-' i I a wise be necessary, in order to insure thatthe and reassemble with-different parts in order-- to insure exactparallelism of the coiiperatarm18 shall not be moved when the device isin operation, and the opening 19 in the arm 18 is made somewhat largerthan the diameter ofthe body of the 'clamping bolt 22 to give aclearance, for a purpose to be hereinafter described.

Referring particularly to Fig. 3, it is'apparent that the arm 18 may bemoved to the right or to the left by a distance equal to the clearancebetween the body of the bolt 22 and the circular opening 19 in the arm18.without changing the distance from the contact point 17 to thesurface of the supporting plate 10. If it becomes necessary to me changethis distance slightly in order to up the .coiiperating contacts 16 and17, the

arm 18 andthe two semi spherical members 20'may be moved in the seatmembers 23 y an' amonnt determined by the clearance between the circularopening 21 in the memhere 20 and the diameter ofthe body of the "bolt22. If it becomes necessary to adjust in the direction of the line 0 -50in Fig. 1 at right angles to the surface of the plate 10, this may bedone. with. equal facility by tilting the arm 18 and the members 20 inthe desired direction an amount limitedby the clearance between theopening 21 in the members 20'and the diameter of the body of the bolt22. It will be seen that adjustments of the arm 18 may be made with caseand without disturbing any other parts of the ignition mechanism.

Various modifications may be made in. the device withoutldeparting fromthe spi-ritand scope of m invention, and I desirethat only suchlimitations shall be imposed as are indicated by the prior artor aresgecifi callyset forth in the appended'claims:

I claim as my invention: I

"1. In an ignition mechanism, the combination comprising two.coiiperatingcontack; members, an arm for supporting one oieaid' contactmembers, two semi-spherical menial bers disposed on opposite sidessofand cooperating, seats therefogeand clamps; ing means for holding saidarm, in, position between said members.

2. In an igmt on mechanism, the; combi, nation with a pair of'coiiparatlngnontact'i members, of a lever arm for supporting nne.

of said contact members, and means ,for. elf;

fecting un versal angular adj ustmenti loijsaidl. arm.- 3. In anignition mechanismTthecombination with a. pair of cooperating comma: ofmeans on which 'one* of said contacts.

mounted, and a clamping member for said mounting means thatpermitsuniversal angular adjustment of .said mounting meansand contact,and also adjustment of said means and said contact in a planeperpendicular to said'clampin'g' member. v 4;'In an ignition mechanism,the combination' with-a pair of cooperating contacts,

contacts is mounted; of clamping means for theother end of said-armthat-permits universaleangalaradj ustment of saidicontant 5; In-an;ignition mechanism, the combinaw tion.with"w pair'of coiiperatingcontacts; and, 40 anlarzn at: one end of which one :of. said cons andanarm -atione end of which one of said 35 I tacts is mounted, ofclampingmeans for; the. v I other end of i said arm comprising, a plurality of semi-spherical members-and coiiper ating. seats therefor and. aretaining, bolt to permitnniversalangular'adjustment of. contact.-

In testimony whereof; L- have. hereunto sublgcribed my, name this/(1stday, of! July 19 I I Jomra. sruiniasnonsr;

